- Estimated achievement difficulty: 4/10 [Achievement Difficulty Rating]
- Offline: 0
- Online: 62 
- Approximate amount of time to 1000: 50-75 Hours [Estimated Time to 100%]
- Minimum number of playthroughs needed: 4
- Missable achievements: None
- Does difficulty affect achievements: N/A
- Unobtainable/glitched achievements: None
- Extra equipment needed: None
- Difficulty: 2/10
- Time to 25: 2+ Hours [All Online]
- Unobtainable: None
State of Decay 2 is the sequel to the hit zombie-survival game that came out in 2013 on the Xbox 360. You take control of a small group of survivors as you build a community to combat the epidemic. You'll scavenge the surrounding countryside for resources such as food, fuel, and ammo as you build facilities, recruit new members, and build relationships with other groups of survivors. All while attempting to eliminate the Plague Hearts from your land, making it livable once more.
State of Decay 2 has a steep learning curve for players new to the series but after a few trial-and-error attempts you shouldn't have too much trouble surviving the apocalypse. Your main goal is to eliminate the ten Plague Hearts in your territory, all while managing your ever-dwindling resources and maintaing positive relationships with the other enclaves of survivors. Most of the achievements will come while playing the game naturally, but it will take at least four complete playthroughs (one with each leader type) to unlock all of the achievements.
This is an online-only game, meaning you must be connected to the internet to play it. That said, multiplayer is entirely optional. You can play through the entire game by yourself. Even the achievement "Sie sind das Essen und wir sind die Jaeger!", which says you need to play with another player, will unlock simply by queuing up and then cancelling.
You should have most of the achievements by the end of your four playthroughs. The only achievment that should take extra time is "Others and Wights". This is quite the grind, so save this one for last.
State of Decay 2 Zedhunter Update is a free DLC that added crossbows, new melee and close-combat weaponry, an option to reset your survivor's core skill specializations, new quirk skills, and new plague consumables, which you can also craft.
There are two miscellaneous and one combat related achievements. You can do them while playing through your campaign, in any order you like. I suggest you always keep an eye on your map for the Mysterious Wandering Trader mission, which will eventually lead you to earning "New Lease on Life." Always carry a crossbow with you and use it to kill zeds whenever possible. Kill 50 of them and this will grant you "Am I the Only One Zen Around Here?" Save at least one plague consumable that come across your path, keep it at your inventory, use it under the right circumstances, and you'll have "Should Have Read the Warning Label."
Overall, State of Decay 2 is a long, but simple completion. The game can become quite repetitive if played for long periods of time, but if you stick with it you shouldn't have any trouble getting all the gamerscore.
[XBA would like to thank NShepherd N7 for this Roadmap]
[XBA would like to thank Mambinni for the Zedhunter DLC Roadmap]